Henri Pousseur, David Tudor, Heinz-Klaus Metzger, Karlheinz Stockhausen, and Pierre Boulez at Darmstadt in 1956 In the eleventh episode of No Sounds Are Forbidden, host Matthew Friedman explores how European composers built a new avant-garde, virtually out of nothing after the Second World War. Growing out of the Darmstadt International Summer Courses for New Music, this transnational community...